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Marty, VK4DOG has an IRLP node up and running to service the Bayside area. This provides an alternative to the VK4RBS node which may be helpful if the repeater is busy. The node (number 6647) is on 145.400 MHz simplex.
Here are some comments from Marty regarding the setup and testing of the IRLP node.
"When I visited my friend Reg, VK4XH about a year ago he showed me his IRLP node and I was fascinated at how far ham radio technology had come. I had not been an active operator for many years and I had missed the introduction of Echolink and IRLP. I knew that when I was ready to get back into the hobby that setting up a IRLP node was one goal I wanted to achieve."
"February 2008 I decided to get back into the hobby and formulated my plan of getting the IRLP node up and running. I had a spare computer, a Dell GX150 pentium III and a Icom IC-228A two metre 25w transceiver. All I needed then was the IRLP interface board. These boards are manufactured by Dave Cameron in Canada. I filled out the electronic order form available at IRLP.net and paid the US$188 by PayPal. About a week later the IRLP interface board and Linux CD-rom arrived. It was a Monday that it arrived and when I got home from work I could wait to get started. I downloaded all of the instructions from IRLP.net
and loaded the supplied CentOS distribution of Linux on the Dell. I commenced making all of the interface cables that needed to go between the computer, IRLP board and the transceiver. One thing that IRLP requires is for the transceiver to have a Carrier on Squelch (COS) line output. This output gives 5 volts when the squelch is triggered. I downloaded the circuit diagram for the Icom and found the point in which I could pull off this signal. I opened up the transceiver, identified the track and soldered an insulated wire from that track which runs out the rear of the Icom. I got to bed at 1am very pleased with my efforts.
"The next day again I was excited to be home from work to commence more work on the node. It was mainly software configuration that was needed as all the hardware was now connected ready to go. After a few hours of configuration and adjustment of audio levels I was ready to give it a test. It worked straight up which I was very happy with as going back to trouble shoot is a pain!"
" I did a test with Victor VK4WST the next day and reports from his end were positive. That night I received a call from Bill VK4XZ who is the QTAC person for the WIA and he told me that
he knew that I had a IRLP node up and running and asked if I would change the simplex frequency from 146.425 to one of the recommended frequencies for IRLP simplex use as outlined in the Nov 2007 band plan. This was news to me as the copy of the band plan that I had was dated 2004. I was happy to comply and changed frequency to 145.400. At this stage I only had a dual band mobile whip on top of a 6 metre pole as the antenna connected to the Icom. The following Saturday I replaced this whip with a Diamond x-510 2M/70cm base station antenna which is 5.2 metres in length and has about 8db gain on 2 metres. I used the Avair AV-601 metre to test for SWR with a result of 1:1. The tip of the antenna is 22.5 metres above sea level which gives a line of sight coverage of 20 km (this range increases the higher the other station is above sea level)"
"The next day I did some field tests with Roy, VK4IRW. From Underwood (17.6 km back to node) I connected to VK4RBS repeater via my node and Roy who was monitoring RBS reported a good clear signal with some minor noise. Likewise his signal back to me was strong and clear. About an hour later we did another test from Manly (15 km back to node) with similar results."
Marty welcomes BDARS club members to make good use to the node. It will also come in very handy as a second node for JOTA use.
Interested in checking out where IRLP nodes are located around the world? At www.irlp.net you can download the IRLP node overly for Google earth. Just make sure you have the latest version of Google Earth installed. The Echolink overlay can be found at www.echolink.org/googleInfo.htm
Here are some comments from Marty regarding the setup and testing of the IRLP node.
"When I visited my friend Reg, VK4XH about a year ago he showed me his IRLP node and I was fascinated at how far ham radio technology had come. I had not been an active operator for many years and I had missed the introduction of Echolink and IRLP. I knew that when I was ready to get back into the hobby that setting up a IRLP node was one goal I wanted to achieve."
"February 2008 I decided to get back into the hobby and formulated my plan of getting the IRLP node up and running. I had a spare computer, a Dell GX150 pentium III and a Icom IC-228A two metre 25w transceiver. All I needed then was the IRLP interface board. These boards are manufactured by Dave Cameron in Canada. I filled out the electronic order form available at IRLP.net and paid the US$188 by PayPal. About a week later the IRLP interface board and Linux CD-rom arrived. It was a Monday that it arrived and when I got home from work I could wait to get started. I downloaded all of the instructions from IRLP.net
and loaded the supplied CentOS distribution of Linux on the Dell. I commenced making all of the interface cables that needed to go between the computer, IRLP board and the transceiver. One thing that IRLP requires is for the transceiver to have a Carrier on Squelch (COS) line output. This output gives 5 volts when the squelch is triggered. I downloaded the circuit diagram for the Icom and found the point in which I could pull off this signal. I opened up the transceiver, identified the track and soldered an insulated wire from that track which runs out the rear of the Icom. I got to bed at 1am very pleased with my efforts."The next day again I was excited to be home from work to commence more work on the node. It was mainly software configuration that was needed as all the hardware was now connected ready to go. After a few hours of configuration and adjustment of audio levels I was ready to give it a test. It worked straight up which I was very happy with as going back to trouble shoot is a pain!"
" I did a test with Victor VK4WST the next day and reports from his end were positive. That night I received a call from Bill VK4XZ who is the QTAC person for the WIA and he told me that
he knew that I had a IRLP node up and running and asked if I would change the simplex frequency from 146.425 to one of the recommended frequencies for IRLP simplex use as outlined in the Nov 2007 band plan. This was news to me as the copy of the band plan that I had was dated 2004. I was happy to comply and changed frequency to 145.400. At this stage I only had a dual band mobile whip on top of a 6 metre pole as the antenna connected to the Icom. The following Saturday I replaced this whip with a Diamond x-510 2M/70cm base station antenna which is 5.2 metres in length and has about 8db gain on 2 metres. I used the Avair AV-601 metre to test for SWR with a result of 1:1. The tip of the antenna is 22.5 metres above sea level which gives a line of sight coverage of 20 km (this range increases the higher the other station is above sea level)"
"The next day I did some field tests with Roy, VK4IRW. From Underwood (17.6 km back to node) I connected to VK4RBS repeater via my node and Roy who was monitoring RBS reported a good clear signal with some minor noise. Likewise his signal back to me was strong and clear. About an hour later we did another test from Manly (15 km back to node) with similar results."
Marty welcomes BDARS club members to make good use to the node. It will also come in very handy as a second node for JOTA use.
Interested in checking out where IRLP nodes are located around the world? At www.irlp.net you can download the IRLP node overly for Google earth. Just make sure you have the latest version of Google Earth installed. The Echolink overlay can be found at www.echolink.org/googleInfo.htm
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